Giant electric field controlled magnetic anisotropy in epitaxial BiFeO3-CoFe2O4 thin film heterostructures on single crystal Pb(Mg1/3Nb2/3)0.7Ti0.3O3 substrate
Giant electric field controlled magnetic anisotropy in epitaxial BiFeO3-CoFe2O4 thin film heterostructures on single crystal Pb(Mg1/3Nb2/3)0.7Ti0.3O3 substrate
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DOI：
10.1063/1.3619836
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发表时间：
2011-07-25
影响因子：
4
通讯作者：
Viehland, D.
中科院分区：
文献类型：
--
作者：
Wang, Zhiguang;Yang, Yaodong;Viehland, D.
我们在Pb（Mg 1/3 Nb 2/3）（0.7）Ti0.3O3（PMN-PT）衬底上制备了BiFeO 3（BFO）-CoFe 2 O 4（CFO）自组装薄膜，并研究了外加电场引起的不同应变条件下磁各向异性的变化。电场极化后，我们观察到（i）巨大的磁化强度变化：原始CFO相的磁化强度是应变相的三倍;（ii）磁力显微镜线轮廓显示CFO磁畴响应根据磁化场（M-H）回路发生显着变化。总之，这些结果证明了通过电场诱导的应变对CFO的磁性能的良好控制。(C)2011年美国物理学会。[doi 10.1063/1.3619836]
We have deposited self-assembled BiFeO3 (BFO)-CoFe2O4 (CFO) thin films on Pb(Mg1/3Nb2/3)(0.7)Ti0.3O3 (PMN-PT) substrates and studied the change in magnetic anisotropy under different strain conditions induced by an applied electric field. After electric field poling, we observed (i) giant magnetization change: magnetization of original CFO phase is three times larger than that of strained one and (ii) magnetic force microscopy line profiles that exhibited significant change in the CFO magnetic domain response in accordance to magnetization-field (M-H) loops. Together, these results demonstrate good control of the magnetic properties of CFO via an electric field induced strain. (C) 2011 American Institute of Physics. [doi:10.1063/1.3619836]